NCT04501627
- Conditions
- Digestive System Diseases, Duodenal Diseases, Esophageal Diseases, +8 more
- Locations
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- Beijing Hospital Beijing, Beijing Municipality, China
- Peking Union Medical College Hospital Beijing, Beijing Municipality, China
- Beijing Tsinghua Changgung Hospital Beijing, Beijing Municipality, China
- Yongchuan Hospital of Chongqing Medical University Yongchuan, Chongqing Municipality, China